Arthroscopic Reduction and Internal Fixation for Pipkin Type I Femoral Head Fracture: Technical Note  Aditya Kekatpure, D.Ortho., D.N.B., Taesoo Ahn, M.D., Soong Joon Lee, M.D., Mi Youn Jeong, R.N., Jae Suk Chang, M.D., Ph.D., Pil Whan Yoon, M.D., Ph.D.  Arthroscopy Techniques  Volume 5, Issue 5, Pages e997-e1000 (October 2016) DOI: 10.1016/j.eats.2016.05.001 Copyright © 2016 Arthroscopy Association of North America Terms and Conditions

Fig 1 (A, B) Preoperative computed tomography images showing 2 infrafoveal femoral head fracture fragments (red arrowheads) with an anteriorly displaced posterior acetabular rim fracture fragment (white arrows). (C, D) Postoperative anteroposterior and frog-leg lateral radiographs at last follow-up showing a well-united fracture fragment (asterisk) and maintained joint space. Arthroscopy Techniques 2016 5, e997-e1000DOI: (10.1016/j.eats.2016.05.001) Copyright © 2016 Arthroscopy Association of North America Terms and Conditions

Fig 2 (A) Supine arthroscopic view of the right hip through the anterolateral portal using a 70° arthroscope with the hip in 45° of flexion without traction. The femoral head fracture fragment (arrowhead) is shown to be incarcerated between the anterior acetabular wall and femoral head in the peripheral compartment. (B) Supine arthroscopic view of the central compartment of the right hip through the anterolateral portal using a 70° arthroscope with the hip in 20° of abduction and 5° of flexion in traction. The smaller posteroinferior fragment is in the cotyloid fossa (arrow). (C) Supine arthroscopic view of the peripheral compartment of the right hip through the anterolateral portal using a 70° arthroscope with the hip in 30° of flexion, abduction, and external rotation. Anatomic reduction has been obtained and is maintained with the help of a grasper passed through the anterior portal and guidewire inserted through the distal accessory anterior portal. (D) Supine arthroscopic view of the peripheral compartment of the right hip through the anterolateral portal using a 70° arthroscope with the hip in 30° of flexion, abduction, and external rotation. Interfragmentary compression is obtained using a 3.0-mm-long threaded headless cannulated compression screw (with a loop of Vicryl lassoed around the neck of the screw) passed over the guidewire through the distal accessory anterior portal. Arthroscopy Techniques 2016 5, e997-e1000DOI: (10.1016/j.eats.2016.05.001) Copyright © 2016 Arthroscopy Association of North America Terms and Conditions